The women's 4 × 400 metres relay at the 2004 Summer Olympics as part of the athletics program was held at the Athens Olympic Stadium from August 27 to 28. The sixteen teams competed in a two-heat qualifying round in which the first three teams from each heat, together with the next two fastest teams, were given a place in the final race.
Yvonne Harrison Castro, also spelled Ivonne is a Puerto Rican athlete who specialized in the 400 metres hurdles. She competed at two World Junior Championships, two World Championships, one World Indoor Championships and one Olympic Games.
Brigitte Heike Meissner is a retired German athlete. She competed mainly in the 400 metres hurdles, but also spent two seasons specializing in the 800 metres. Notable achievements include a silver medal at the 2002 European Championships, medals in 4 x 400 metres relay at the 1994 European Championships and the 1997 World Indoor Championships and a fourth place at the 1995 World Championships.
Natalya Nikolayevna Antyukh is a Russian sprinter who specializes in the 400 metres and 400 metres hurdles. She won the bronze medal in the 400 metres and a silver for the 4 × 400 m relay at the 2004 Summer Olympics in Athens.
Anna Marta Jesień, née Olichwierczuk is a Polish former hurdler.
Anastasiya Rabchenyuk is a Ukrainian hurdler. She was born in Ternivka, at the time in the Ukrainian SSR of the Soviet Union. She is a world top level 400 m hurdles runner.
Élodie Ouédraogo is a retired Belgian sprinter of Burkinabé descent, who specializes in the 200 metres and 400 m hurdles. An Olympic gold medalist, her personal best time in the 200 m is 23.11 seconds, achieved in July 2004 in Brussels, while her personal best in the 400 m hurdles is 55.20, achieved at the 2012 Summer Olympics. Ouédraogo is also the joint third-fastest Belgian woman after Kim Gevaert and Olivia Borlée and equalling Nancy Callaerts with her best 100 metres time of 11.40. Her 200 metres best ranks her fourth amongst Belgian women after Gevaert, Borlée and Hanna Mariën. Her 400 m hurdles best places her as the second-fastest Belgian woman over the distance, after Ann Mercken.
Matthew John "Matt" Elias is a retired Welsh athlete who specialised in the 400 metres sprint and 400 metres hurdles. During his international career he represented Great Britain. In 2003 he won a gold medal at the European Championships and at the 2004 Olympic Games in Athens he finished 5th in the 4 × 400 m relay, He is also a part of Super Schools.
Zuzana Hejnová is a retired Czech athlete who specialised in the 400 metres hurdles. She won the silver medal in the event at the 2012 London Olympics. Hejnová is a two-time World Champion, having claimed titles at the 2013 and 2015 World Championships in Athletics. She won bronze at the 2012 European Championships and silver for the 400 metres at the 2017 European Indoor Championships.
Antonina Vladimirovna Krivoshapka is a Russian sprinter who specializes in the 400 metres. She competed at the 2012 Summer Olympics, where her team originally was awarded a silver medal in the 4 × 400 m relay. Krivoshapka and her teammates were later stripped of this medal after Krivoshapka tested positive for the steroid turinabol.
Kaliese Spencer Carter is a Jamaican track and field athlete who specialises in the 400 metres hurdles. She won the bronze medal in the event at the 2012 London Olympics. Spencer was the Commonwealth Games champion in 2014 and a double silver medallist at the 2014 World Indoor Championships. She finished fourth at both the 2009 and 2011 World Championships in Athletics.
Muizat Ajoke Odumosu Alademerin is a Nigerian track and field athlete who specialises in the 400 metres and the 400 metres hurdles. She represented Nigeria at the 2008 and 2012 Summer Olympics and competed at the World Championships in Athletics in 2007, 2009, 2011 and 2013. She was the bronze medallist at the 2007 All-Africa Games and went on to become the continental champion with a win at the 2008 and 2012 African Championships.
The women's 400 metres hurdles competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 5–8 August.
Lauren Boden is an Australian athletics competitor. Her events are the 400 metre hurdles, 400 metres and long jump. She was the youngest woman to win the 400 metres hurdle event at the Australian national championships. She has competed in the long jump event and the 400 metres hurdle event at the World University Games. She has competed at the 2006 and 2010 Commonwealth Games and the 2012 and 2016 Summer Olympics in the 400 metre hurdles event.
Anna Mikhaylovna Knoroz is a retired Russian hurdler who specialised in the 400 metres hurdles. She won a bronze medal in the 400 m hurdles at the 1994 European Championships, and a gold medal in the 4 × 400 metres relay at the 1991 World Championships. She also competed at the 1996 Atlanta Olympics.
Janieve Russell is a Jamaican track and field athlete who competes mainly in the 400 metres hurdles and the 400 metres sprint. She won an Olympic bronze medal in the 4 × 400 m relay in Tokyo 2021, where she also finished fourth in the 400m hurdles final in a personal best of 53.08 secs. She is a four-time Commonwealth Games gold medallist, winning the 400m hurdles title in 2018 and 2022, and the 4 × 400 m relay in 2014 and 2018. She has also won two relay silvers at the World Championships and a relay gold at the World Indoor Championships.
Mary-Estelle Mahuk is a Vanuatuan athlete.
Zoë Frederique Sedney is a Dutch athlete who competes in the hurdles, 100 metres, 200 metres, 400 metres and 4 × 100 metres relay. Sedney won two gold medals at the 2017 European Youth Summer Olympic Festival. As a senior in 2021, she competed in both the European Indoor Championships and the Summer Olympics. In 2022, she became part of the 4 × 100 metres Dutch relay team, competing together with her older sister Naomi Sedney.
Eveline Saalberg is a Dutch sprinter who specialises in the 400 metres.
The women's 400 metres hurdles at the 2022 European Athletics Championships took place in three rounds at the Olympiastadion in Munich, Germany, from 17 to 19 August 2022.
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